yo tenía que a compañarla y podía haber ruido

Hello. I need some help. I understand the majority of this, however there is a line that I am having trouble with. It is "y yo tenía que a compañarla y podía haber ruido" that I quite don't understand. Can any one assist. thanks

Sorry for yesterday, when you called I was at the hospital of the island with a friend of mine, het pressure was rising and she was having pain in her breast.
Afterwards I had to put down the telephone because they were doing various examinations and I had to accompany her and I might have made noise.
I'm sorry, I wanted to talk to you on the telephone too.